GHSA-MCV8-8M8X-48PG

Vulnerability from github – Published: 2026-04-03 23:38 – Updated: 2026-04-06 23:42
VLAI?
Summary
Hugo: Certain markdown links are not properly escaped
Details

Impact

Links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected.

Patches

Patched in v0.159.2

Workarounds

Create custom render hooks for links and images in a Hugo theme/project.

Severity ?
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/gohugoio/hugo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.60.0"
            },
            {
              "fixed": "0.159.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35166"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-03T23:38:19Z",
    "nvd_published_at": "2026-04-06T18:16:43Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nLinks and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected.\n\n### Patches\nPatched in  v0.159.2\n\n### Workarounds\nCreate custom render hooks for links and images in a Hugo theme/project.",
  "id": "GHSA-mcv8-8m8x-48pg",
  "modified": "2026-04-06T23:42:22Z",
  "published": "2026-04-03T23:38:19Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gohugoio/hugo/security/advisories/GHSA-mcv8-8m8x-48pg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35166"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gohugoio/hugo/commit/479fe6c654937a850b65e74551dc4e857d52898f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gohugoio/hugo"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Hugo: Certain markdown links are not properly escaped"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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